GPI coverage and content

You can use Global Patent Index (GPI) to carry out detailed searches in the EPO's worldwide bibliographic (DOCDB), legal event (INPADOC) and full-text data sets, and download or visualise the search results for statistical analysis.

Current content: 155 263 406 patent documents

This week's update (19/04/2024 12:00 CET):

215 613 new documents added

1 342 057 documents amended

GPI key values

Run regular monitoring (e.g. monthly or quarterly) of technical areas or companies

Use built-in charts to visualise technical trends and patenting activity of companies

Choose the data you want to see and download to focus on what you are interested in

Run data quality assessments to measure the risk of incomplete search results

EP 0289301 A2 19881102 - Master cylinder assembly.

Title (en)

Master cylinder assembly.

Title (de)

Hauptzylinderaufbau.

Title (fr)

Structure d'un maître-cylindre.

Publication

EP 0289301 A2 19881102 (EN)

Application

EP 88303838 A 19880428

Priority

GB 8710273 A 19870430

Abstract (en)

A master Cylinder assembly includes a plurality of pressure cylinders (1, 2) and a connecting member (3) interconnecting respective ends (2A) of the cylinders. The connecting member incorporates a transfer passage (30) and associated valve means (27) for controlling fluid flow between the cylinders (1, 2) via the transfer passage.

IPC 1-7

B60T 11/20

IPC 8 full level

B60T 11/20 (2006.01)

CPC (source: EP US)

B60T 11/203 (2013.01 - EP US)

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family (publication)

EP 0289302 A2 19881102; EP 0289302 A3 19890104; EP 0289301 A2 19881102; EP 0289301 A3 19881228; GB 8710273 D0 19870603; US 4884404 A 19891205

DOCDB simple family (application)

EP 88303839 A 19880428; EP 88303838 A 19880428; GB 8710273 A 19870430; US 18614188 A 19880426